Combined plow and pulverizer



J. a. DAvlnsoN COMBINED PLow AND PULVERIZER aan. 1, 1929.

Filed March 5, 1922"? JAY l e 1.69m price.

4 LEE DAVIDSON, OF AHES, IOW, .ASSIGNOB., BY MESNE ASSIGMENTS, T0

GRAL IMPLEMENT COMPANY, A CORPORATION F DEL- AWARE coman rnow AimrULvnnIznn.

Application filed March 5, 1927. Serial No. 173,002.

An important feature of the invention resides in the use of thepulverizer device 'as a component part of the plow structure and this isaccomplished by substituting a p ulverizer, rotatable in a -clockwisedirect1on -about a vertical axis, for the greater part lof the plowmoldboard, .thereby eliminating the relatively great frictioncreatedbetween the furrow slice and moldboard in ordinary plowconstructions.

` A feature vof the invention resides 1n. the provision of readilyremovable mountmgs or supports for the pulverizer members 1n 'Order toprovide for the'converslon 'of the 15, implement into a low structurealone or into a combined p ow and soil pulverizer as the circumstancesmay require.

Other` features of the invention will be hereinafter referred to. 2e 1n'the drawings, in which a preferred embodiment of the invention has beenselected for illustration:

Figure 1 is a plan view of a, combined plow and soil pulverizerembodying the v1n- 23 vention; Figure 2 is a view in side elevation ofthe device shown in Figure 1;

Referring to the drawings for a more detailed descri tion of the:invention, a plow 30 construction 1s shownwhich includes a rigidframework made up of longitudinally ex- 'tending members comprising alow beam 10 and a plow beam 11. The, p ow beams are connected at theirforward ends by a sa spacing bar 12 and adjacent their-rearward .ends bymeans of a diagonally extending s acing bar 13. The combined beam andgame members 10 and 11 occupy a parallel relation with each other and.support. at ae their rearward and downwardly curved ends 1d and 15 apair-of plows 16 andi?. The plow framework includes at its forward end apair of vertically disposed hitch lates 18- and 19 which are rig1dlyattache to the as forward extremities of the beam members 10 and 1'1.The hitch plates are provided with vertical series of holes 20 throughwhich a pivot pinor rod 21 may be passed to provide a pivotal connectionbetween the l 5e hitch plates 18 and 19 and a V-shaped tractor member 22which is pivoted for `horizontal. movement about a verticall pin 23 inal U-sliaped frame member 24. IThe trame member 24 is provided at itsforward e3 eatty -witlra hitchplate 25'v adapted to tion as a `ful tionboth longitudinally tion higher than lthat of the Abers 10 and 114 ofthe plows. The lground be'attached to the drawbar head of a tractor. Thevertical pivot pin 23 is mounted for lateral adjustment at its upperend, the adjustment being provided by means of a hand crank 26 readilyaccessible from the drivers 60 seat of the tractor. The hand crank isprovided with a screw-threaded section 27 which cooperates with a nut 28mounted on the upper end of the pin 23, the lateral adjustment thusprovided serving to tilt the 65 pivot pin 23 laterally about its lowerporcrum ,to -thereby adjust thevv lateral level of the plow structure.

IThe plow framework is sup rted at two points only, one point being t econnection 70 referred to between the hitch plate and- ,the drawbar headof the tractor, the other point being through the ground wheel 29 whichoccupies a centrally disposed posiand laterally with relation to' theplow framework. The l ground wheel 29 has a substantial diametersuchthat when the plows are intheir lowered or operative position, theupper4 portion of the' ground wheel occu ies a posieam memwheelis'vsupported for rotation on one arm of a pivotall mounted axle orbracket member 30. cans, including a clutch device 31 and a connectingrod 32, are provided for swinging the axle or bracket member y about itspivot arm 33 to thereby bring about a vertical adjustment of the plowframework-with relation to the ound wheel. The vertical adjustment orifting and lowering of the plow framework which is thus provided iseii'ected through they roy tation of the weight supporting ground wheel29 and the clutch connection 31. This 95 particular structure forms noessential part of the invention herein claimed but is described andclaimed in the copending application already referred to. A

The rearward portions of each of the plow 100 beam members 10 and 11 areprovided with rearwardly and outwardly extendingjbracket members 34.-and 35 which'are arranged to support a pair of rotatable soil pulverizerdevices 36 and'37. The soil ulverizer de- 105 vices 36 and 37 includevertica shafts 38 and 39 journaled at their upper ends in bearingvhousings 40 and 41 supported by the' bracket members 34 and 35. hedepending positionof the soil pulverizing devices 36 1m and 37, which isthus provided, results in the coo eration of the soil pulverizingdevices wit the soil which is in the act of being turned b the plow. y

cIn or er to eliminate as `far as possible the friction of travel of thefurrow slice along the face of the moldboard with a resulting loss inpower, the moldboard struc' ture arranged 'for use withl pulverizers isshortened or restricted in length so that the travel of the furrow slicealong the face of the moldboard is very materially lessened. Theshortened moldboards referred to are shown with their rearward ed esterminating at 42 and 43 in Figure 2 o the drawing with a resultingmounting of the pulverizer devices in a osition which in part overliesthe rearwar ends 44 of the share portions of the plow. I thus provide aminimum moldboard surface area and, in effect, substitute for therearward portion of the moldboard a moving moldboard structure, that is,the rotating tiller device.

It has been found with this arrangement 2li-sof structure that the plowcan be pulled and the rotatable pulverlzers operated with a markedeconomy in the use of power. The result of this is that thestructureshown and described is in actual practice readily pulled andoperated lby means of a well known tractor of moderate power that hasgone in extensive and universal use.

In order to operate the pulverizer or Atiller shafts 38 and 39, adiagonally extending drive shaft 45is provided at its opposite ends withbeveled pinions 46 and 47 which mesh with beveled gears 48 and 49carried by the upper extremities of the drive shafts 38 and 39. Thedrive shaft 45 accordingly provides a common -driving means for the twopulverizer shafts 38 and 39. The drive shaft 45 is in turn driventhrough a pair of beveled gears 50 and 60 with a main driving I' shaft51 which extends throughout the length of the plow framework beingsuprted in bearings 52 and 53 mounted on racket members 54 and 55attached in turn to the frame members 13 and 12 of the plow framework.l,The driving sh?` ft 51" is provide-d with a universal cou'phl Ligmember `56.

' at vits rearmost extremity winch provides a connection with a shaft 57terminating in the beveled gear 50 already referred to. At its forwardend the drive. shaft 51 terminates in a universal couplin member 58 towhich a power shaft 59, leading forward to a driving connection with thepower plant of the tractor, is in turn connected. The-powerv shaft'maybe connected to a centrally disposed power shaft in the tractorterminating adjacent the tractor drawbar head or, if` desired, the powershaft may lead toa power I -take off device mounted on the right-handside of the tractor. For this purpose, the drive shaft 51 is mountedadjacent the righthand side of the framework of the plow and' to theright of theV centrally disposed weight supporting wheel 29.

In order to provide for the use of the structure described either as aplow alone or as a combined plow and soil tillage implement, thepulverizer devices 36 and 37 are so mounted on thel low framework thatthey may be readily disconnected therefrom or connected thereto as maybedesired. Forthis purpose, the lbearing housings 40 and 41 are adaptedfor read removal from the bracket members 34 an `35 on which theyaremounted. In addition, in order to fur ther adapt the device forfunctionin leither as a low alone or as a combined ow and soil tillageimplement, the short mo dboards, shown in Figure2of the drawings bereadily removed and full length mol board members substituted therefor.It will be seen that the interchangeable moldboard thus'provided servesvto particularly adapt the apparatus for use in either of its funcforusel with the pulverizer members 36 and 37 ma e seen that the tegratethe soil has the effect of reducing the consumption of power required topull the machine since the friction of the furrow slice against therelatively long face of the moldboard in ordinary plow constructions iseliminated and the rotating pulverizers substituted therefor.

It will be seen that an agricultural im lement has thus been providedwhich rov1des- Anot only a sturdy, simple. and relatlvely inexpensiveplow structure but vit also provides a combination implement through theoperation of which ground can be plowed and at.

the same time workedinto a finely divided condition which rov'ides acompletely prepared seed bed plowed ground. The practicabilityl of themachine shown and described has been-rein wet andgummy soils, such asare found incertain reglons 1n Texas.

What I claim 1s:

1. In a plow of the share and moldboard type, a forwardly extendingbeam, a bracket member mounted on a rearward portion of the beam toextend rearwardly and outwardly therefrom, a rotatable soil pulverizeror the full depth of the v oently demonstrated in operations conducted piso momen' having a vertical shaft mounted on its upper end on saidbracket member, the moldboard of the plow having its rearward edgeterminating short of the rearwardv end of the share, and said pulverizeroperating above the` rearward end of the share and closely adjacent therearward edge of the moldboard.

2. In an implement of the class described the combinationl of a plowshare, a furrow slice lifting member associated with the plow share' andhaving its rear end terminated short of the rear end ofthe plow:ehai'ev,v a Y I gage throw it outwardl JAY BRO v E DAVIDSON?

